^^^I have an alternative method.
Weave the top cross and tie-off with your chosen knot. Hand pull the string until the knot sits tight against the grommet. Take fixed clamp furthest from tension head and clamp string nearest frame where the knot is. Tension string and clamp string using other fixed clamp. Then continue with rest of crosses.
Babolat Strike 18 x 20; Wimbledon stringing team since '04; Head Wimbledon stringer '14 - 15; Babolat stringing team '10 -'15;Twitter @therqtstringer